chore: complete create discount

src/app.module.ts

@@ -17,6 +17,7 @@ import { AuthModule } from "./modules/auth/auth.module";
 import { ContactUsModule } from "./modules/contact-us/contact-us.module";
 import { CriticismModule } from "./modules/criticisms/criticisms.module";
 import { DanakServicesModule } from "./modules/danak-services/danak-services.module";
+import { DiscountModule } from "./modules/discounts/discounts.module";
 import { InvoicesModule } from "./modules/invoices/invoices.module";
 import { LearningModule } from "./modules/learnings/learning.module";
 import { NotificationModule } from "./modules/notifications/notifications.module";
@@ -52,6 +53,7 @@ import { WalletsModule } from "./modules/wallets/wallets.module";
     InvoicesModule,
     SubscriptionsModule,
     LearningModule,
+    DiscountModule,
   ],
   controllers: [],
   providers: [],